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Interface Circuit For Printer PortElectronic circuit, called printer-port interface circuit (PPI) developed to overcome certain disadvantages of previous methods for connecting IBM PC or PC-compatible computer to other equipment. Has both reading and writing modes of operation. Very simple, requiring only six integrated circuits. Provides for moderately fast rates of transfer of data and uses existing unmodified circuit card in IBM PC. When used with appropriate software, circuit converts printer port on IBM PC, XT, AT, or compatible personal computer to general purpose, 8-bit-data, 16-bit address bus that connects to multitude of devices.
Document ID
19910000237
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Tucker, Jerry H.
(NASA Langley Research Center, Hampton, VA.)
Yadlowsky, Ann B.
(NASA Langley Research Center, Hampton, VA.)
Date Acquired
August 14, 2013
Publication Date
June 1, 1991
Publication Information
Publication: NASA Tech Briefs
Volume: 15
Issue: 6
ISSN: 0145-319X
Subject Category
Electronic Components And Circuits
Report/Patent Number
LAR-13950
Accession Number
91B10237
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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